#include <bits/stdc++.h>
using namespace std;
double a,b,c;
double ans1,ans2;

int main() {

    cin >> a>>b >> c;

    double b4ac = b*b - 4*a*c;
    if(b4ac<0) {
        cout << "No answer!";
    } else {
        double x1 = (-b + sqrt(b4ac))/(2*a);
        double x2 = (-b - sqrt(b4ac))/(2*a);
        
        if(x1==x2){
            cout << "x1=x2=" << fixed << setprecision(5) << x1;
        } else if(x1<x2){
            cout<< fixed << setprecision(5) << "x1=" << x1 << ";x2=" << x2;
        } else{
            cout<< fixed << setprecision(5) << "x1=" << x2 << ";x2=" << x1;
        }
    }
    return 0;
}